Shift Solenoid Control Circuit Range/Performance
The P0981 code indicates that the Powertrain Control Module (PCM) has detected a malfunction in the shift solenoid control circuit, specifically related to range or performance. This solenoid is responsible for directing transmission fluid to engage the appropriate gear. The PCM monitors the electrical circuit and the solenoid's response; if the voltage or resistance is out of expected range, or if the solenoid fails to actuate properly, this code sets. Common causes include faulty solenoid, wiring issues, low transmission fluid, or internal transmission problems.
01. Most Common Causes
- Faulty shift solenoid
- Damaged wiring or connectors in solenoid circuit
- Low or contaminated transmission fluid
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission stuck in gear or fails to shift
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top up or replace if necessary.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose connections.
Step 4: Test solenoid resistance and power/ground circuits with a multimeter.
Step 5: Perform a solenoid actuation test using a scan tool.
Step 6: If solenoid and circuits are OK, suspect internal transmission issue.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a faulty shift solenoid can cause erratic shifting, transmission damage, or complete failure, leading to costly repairs.
How much does it cost to fix?▼
Repair costs vary from $150 to $400 for solenoid replacement, but can be higher if internal transmission damage is found.